How can I create a complex reactive form in Angular?

How can I create a complex reactive form in Angular?

To create a complex reactive form in Angular, you can use the FormGroup and FormControl classes. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

import { Component } from '@angular/core';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';

@Component({
  selector: 'app-complex-form',
  templateUrl: './complex-form.component.html'
})
export class ComplexFormComponent {
  complexForm: FormGroup;

  constructor(private fb: FormBuilder) {
    this.complexForm = this.fb.group({
      name: ['', Validators.required],
      email: ['', [Validators.required, Validators.email]],
      address: this.fb.group({
        street: ['', Validators.required],
        city: ['', Validators.required]
      })
    });
  }
}

This sets up a form with nested controls. Do you need help with the template?

Yes, what would the template look like?

The template could look like this:

<form [formGroup]="complexForm" (ngSubmit)="onSubmit()">
  <label>Name:</label>
  <input formControlName="name" />
  <label>Email:</label>
  <input formControlName="email" />
  <div formGroupName="address">
    <label>Street:</label>
    <input formControlName="street" />
    <label>City:</label>
    <input formControlName="city" />
  </div>
  <button type="submit">Submit</button>
</form>